Equilibrium melting curves of silver using high-temperature calorimeters

被引：21

作者：

Ancsin, J ^{[1
]}

机构：

[1] Natl Res Council Canada, Inst Natl Measurement Stand, Ottawa, ON K1A 0R6, Canada

来源：

METROLOGIA | 2001年 / 38卷 / 01期

关键词：

D O I：

10.1088/0026-1394/38/1/1

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A high-temperature calorimeter has been developed for studying the equilibrium melting behaviour of substances used for realizing the thermometric fixed points. Conventional cells of either 5 cm or 2.5 cm diameter can be accommodated. Using the calorimeter, the equilibrium melting curves of three high-purity silver samples were measured. The samples have narrow melting ranges: two of 1.5 mK and one of about 0.5 mK from 10 % liquid sample fraction to the last measured point near 70 % liquid, yet their liquidus points differ by nearly 5 mK. It was found that 1/F plots cannot be used to determine the deviation of the melting point of real silver samples from that of ideally pure silver.

引用

页码：1 / 7

页数：7

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